I watched two other talks today. The first was from Richard Lawrence about the energy problems of an oil-based civilisation and had a proposal for creating a computer model about the energy reserves of the world in the tradition of the "Limits to growth" and "Beyond Oil". Was very interesting, while I think that his view was a bit limited to certain aspects.
The second was a very interesting talk from Andreas Bogk about todays operating systems and their problems, especially the use of C, which suffers from Buffer Overflows and other security issues that could be faded out by the programming language. He suggests rewriting a whole operationg system from scratch using the Dylan programming language.